Transparent ceramic insulator for sparkplugs



FIG. 1 is an elevated perspective view of a transparent ceramic insulator for sparkplugs according to our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a top view thereof, shown enlarged for clarity; and,

FIG. 7 is a bottom view thereof, shown enlarged for clarity.

The broken lines showing, the electrode, the shell, and the terminal of the sparkplug, in the figure drawings are included for illustrative purposes only and form no part of the claimed design.

The special dot-dash line in FIG. 6 defines the bounds of the claimed design and forms no part of the claimed design.

The transparency of the insulator is a unique characteristic in the field of sparkplugs and is intended for its visual effect only. 

The ornamental design for a transparent ceramic insulator for sparkplugs, as shown and described. 